MLA

Downey, John T., 1930-2014. Correspondence, clippings, and awards. Box 5, folder 5-6. 1927–1955. https://collections.library.yale.edu/catalog/33324446.

APA, 6th edition

Downey, John T., 1930-2014. (["Box 5, folder 5-6"])(1927–1955)[Correspondence, clippings, and awards]. https://collections.library.yale.edu/catalog/33324446.